Preston has over 20 years’ experience in applied economics. He has developed a particular speciality in cost-benefit analysis and economic evaluation more generally. A key strength is his ability to convey complex concepts and ideas in a straightforward manner.

Preston completes the majority of his work for public sector clients in areas such as transport, waste, education and Māori economic development. He has advised agencies such as the Ministry for the Environment, Ministry of Transport, the Independent Māori Statutory Board, Te Puni Kokiri and the Ministry of Business, Innovation and Employment.

Prior to joining Sapere, Preston was as an economist with the New Zealand Institute of Economic Research working on a diverse range of projects for his clients. He was part of the teaching team for the Graduate Diploma in Economic Development offered for the first time in 2003 by the Auckland University of Technology.
Preston previously worked as an economic and financial analyst at the New Zealand Treasury, focusing on immigration, industry training and other labour market policy issues.